WordReference Random House Unabridged Dictionary of American English © 2026
pres•by•o•pi•a
(prez′bē ō′pē ə, pres′-),USA pronunciation n. [Ophthalm.]
pres•by•op•ic
(prez′bē op′ik, pres′-),USA pronunciation adj.
- Ophthalmologyfarsightedness due to ciliary muscle weakness and loss of elasticity in the crystalline lens.
- Greek presby- (combining form of présbys old, old man) + -opia
- 1785–95;
'presbyopic' also found in these entries (note: many are not synonyms or translations):